[PATCH v4 net-next 0/4] net: ethernet: ti: cpsw: Add XDP support

Ivan Khoronzhuk
2019-06-25T17:59:56Z

This patchset adds XDP support for TI cpsw driver and base it on
page_pool allocator. It was verified on af_xdp socket drop,
af_xdp l2f, ebpf XDP_DROP, XDP_REDIRECT, XDP_PASS, XDP_TX.

It was verified with following configs enabled:
CONFIG_JIT=y
CONFIG_BPFILTER=y
CONFIG_BPF_SYSCALL=y
CONFIG_XDP_SOCKETS=y
CONFIG_BPF_EVENTS=y
CONFIG_HAVE_EBPF_JIT=y
CONFIG_BPF_JIT=y
CONFIG_CGROUP_BPF=y

Link on previous v3:
https://lkml.org/lkml/2019/6/5/446

Also regular tests with iperf2 were done in order to verify impact on
regular netstack performance, compared with base commit:
https://pastebin.com/JSMT0iZ4

v3..v4:
- added page pool user counter
- use same pool for ndevs in dual mac
- restructured page pool create/destroy according to the last changes in API

v2..v3:
- each rxq and ndev has its own page pool

v1..v2:
- combined xdp_xmit functions
- used page allocation w/o refcnt juggle
- unmapped page for skb netstack
- moved rxq/page pool allocation to open/close pair
- added several preliminary patches:
net: page_pool: add helper function to retrieve dma addresses
net: page_pool: add helper function to unmap dma addresses
net: ethernet: ti: cpsw: use cpsw as drv data
net: ethernet: ti: cpsw_ethtool: simplify slave loops

Based on net-next/master

Ivan Khoronzhuk (4):
net: core: page_pool: add user cnt preventing pool deletion
net: ethernet: ti: davinci_cpdma: add dma mapped submit
net: ethernet: ti: davinci_cpdma: return handler status
net: ethernet: ti: cpsw: add XDP support

.../net/ethernet/mellanox/mlx5/core/en_main.c | 8 +-
drivers/net/ethernet/ti/Kconfig | 1 +
drivers/net/ethernet/ti/cpsw.c | 536 ++++++++++++++++--
drivers/net/ethernet/ti/cpsw_ethtool.c | 25 +-
drivers/net/ethernet/ti/cpsw_priv.h | 9 +-
drivers/net/ethernet/ti/davinci_cpdma.c | 123 +++-
drivers/net/ethernet/ti/davinci_cpdma.h | 8 +-
drivers/net/ethernet/ti/davinci_emac.c | 18 +-
include/net/page_pool.h | 7 +
net/core/page_pool.c | 7 +
net/core/xdp.c | 3 +
11 files changed, 640 insertions(+), 105 deletions(-)

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2.17.1